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Dan-Dan Li, Chang Liu, Yan-Qi Zhang, Xiu-Juan Wang, Ning Wang, Ming Peng, Xiao-Yan Song, Hai-Nan Su, Xi-Ying Zhang, Yu-Zhong Zhang, Mei Shi
A Gram-reaction-negative, aerobic, non-flagellated, rod-shaped and yellow-pigmented bacterium, designated strain SM1502T, was isolated from Arctic seawater. The isolate grew at 10-40 oC and with 0-8.0 % (w/v) NaCl. Phylogenetic analysis based on 16S rRNA gene sequences revealed that the isolate was affiliated with the genus Flavobacterium, with the highest sequence similarity (96.0 %) found with Flavobacterium suzhouense. The major fatty acids of strain SM1502T were iso-C15:0, iso-C17:1ω9c, iso-C15:1 G, C15:0, iso-C17:0 3-OH and unknown ECL 13...
January 18, 2017: International Journal of Systematic and Evolutionary Microbiology
Osama Sammra, Jörg Rau, Jörn-Peter Wickhorst, Mazen Alssahen, Abdulwahed Ahmed Hassan, Christoph Lämmler, Peter Kämpfer, Stefanie P Glaeser, Hans-Jürgen Busse, Tanita Kleinhagauer, Tobias Knauf-Witzens, Ellen Prenger-Berninghoff, Amir Abdulmawjood, Günter Klein
AbstractA polyphasic taxonomic study was performed on an unidentified Arcanobacterium-like Gram-stain-positive bacterium isolated from the genital tract of a rhinoceros. Comparative 16S rRNA gene sequencing showed that the bacterium belonged to the genus Arcanobacterium and was most closely related to the type strains of Arcanobacterium canis (98.8 %), Arcanobacterium phocisimile (97.8 %), Arcanobacterium phocae (97.7%), Arcanobacterium haemolyticum (97.4 %), Arcanobacterium hippocoleae (96.6 %), Arcanobacterium pinnipediorum (96...
January 10, 2017: International Journal of Systematic and Evolutionary Microbiology
Hangxian Lai, Yingying Jiang, Xiu Chen, Qinyuan Li, Chenglin Jiang, Yi Jiang, Xiaomin Wei
A novel halophilic, filamentous actinomycete strain, designated AFM 10258T, was isolated from a sediment sample collected from Dead Sea of Israel. The isolate grew with 10-35% NaCl and did not grow without NaCl. The isolate formed white aerial mycelium and long spore chains, and two spores were separated by sterile mycelium. The spores were non-motile, spherical and rugose-surfaced. The isolate contained meso-diaminopimelic acid as the diagnostic diamino acid and galactose and arabinose as the major whole-cell sugars...
January 10, 2017: International Journal of Systematic and Evolutionary Microbiology
Fei Wang, Jindi Shi, Yaojian Huang, Yingying Wu, Xianming Deng
Strain XMU 110T, isolated from the rhizosphere soil of a flowering tree, Ceiba speciosa, was characterized by polyphasic taxonomy. Phylogenetic analysis based on the 16S rRNA gene comparisons revealed that strain XMU 110T showed the highest similarity of 97.9 % to Nonomuraea jabiensis DSM 45507T, and indicated the closest relatives of strain Nonomuraea roseoviolacea subsp. roseoviolacea ATCC 27297T (97.8 %) and Nonomuraea salmonea DSM 43678T (97.4 %) after a neighbour-joining analysis. The phenotypic characteristics, as well as the levels of DNA-DNA relatedness between strain XMU 110T and N...
January 10, 2017: International Journal of Systematic and Evolutionary Microbiology
Seoung-Ryoung Choi, Joel Frandsen, Prabagaran Narayanasamy
Menaquinone (MK) biosynthesis pathway is a potential target for evaluating antimicrobials in gram-positive bacteria. Here, 1,4-dihydroxy-2-naphthoate prenyltransferase (MenA) was targeted to reduce methicillin-resistant Staphylococcus aureus (MRSA) growth. MenA inhibiting, long chain-based compounds were designed, synthesized and evaluated against MRSA and menaquinone utilizing bacteria in aerobic conditions. The results showed that these bacteria were susceptible to most of the compounds. Menaquinone (MK-4) supplementation rescued MRSA growth, suggesting these compounds inhibit MK biosynthesis...
January 10, 2017: Scientific Reports
Yong Li, Meng-Jie Ai, Ye Sun, Yu-Qin Zhang, Jian-Qiang Zhang
A phosphate-solubilizing bacterium, designated CPCC 100624T, was isolated from a fresh water reservoir in south-west China. The 16S rRNA gene sequence comparison of strain CPCC 100624T with the available sequences in the GenBank database showed that the isolate was closely related to the members of the genus Spirosoma. In the phylogenetic tree based on 16S rRNA gene sequences, strain CPCC 100624T formed a stable phylogenetic subclade with Spirosoma soli MIMBbqt12T within the genus Spirosoma, which indicated that strain CPCC 100624T could be identified as a member of the genus Spirosoma...
January 6, 2017: International Journal of Systematic and Evolutionary Microbiology
Teresa Zotta, Eugenio Parente, Annamaria Ricciardi
This review outlines the recent advances in the knowledge on aerobic and respiratory growth of lactic acid bacteria, focusing on the features of respiration-competent lactobacilli. The species of the genus Lactobacillus have been traditionally classified as oxygen tolerant anaerobes, but it has been demonstrated that several strains are able to use oxygen as a substrate in reactions mediated by flavin oxidases and, in some cases, to synthesize a minimal respiratory chain. The occurrence of genes related to aerobic and respiratory metabolism and to oxidative stress response apparently correlates with the taxonomic position of lactobacilli...
January 7, 2017: Journal of Applied Microbiology
Rachel Kokoczka, Dorothée L Schuessler, Julie V Early, Tanya Parish
Mycobacterium tuberculosis Rv0560c, a putative benzoquinone methyl transferase, is heavily induced in response to salicylate exposure. It has some similarity to Escherichia coli UbiG, although its role in ubiquinone or menaquinone synthesis is not clear, since M. tuberculosis is not known to produce ubiquinone. We constructed an unmarked in-frame deletion of Rv0560c in M. tuberculosis to determine its role in vitro. Deletion of Rv0560c in M. tuberculosis had no effect on growth in medium containing salicylate or in its ability to grow in macrophages...
January 2017: Tuberculosis
Wei-Wei Feng, Tian-Tian Wang, Juan-Luan Bai, Peng Ding, Ke Xing, Ji-Hong Jiang, Xue Peng, Sheng Qin
A novel actinobacterium designated KLBMP 5180T, was isolated from the surface-sterilized root of a coastal halophyte Limonium sinense collected from the city of Lianyungang, Jiangsu Province, east of China. The isolate was Gram-stain-positive, aerobic and non-motile. The components of cell-wall peptidoglycan were lysine, glutamic acid and alanine. The predominant menaquinone was MK-9 (70%). The polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol and one unknown phospholipid...
January 5, 2017: International Journal of Systematic and Evolutionary Microbiology
Shao-Wei Liu, Li Tuo, Xiao-Jun Li, Fei-Na Li, Jing Li, Ming-Guo Jiang, Li Chen, Lin Hu, Cheng-Hang Sun
A novel endophytic actinobacterium, designated strain S3Cf-2T, was isolated from a surface-sterilized bark of Bruguiera sexangula collected from Dongzhaigang National Nature Reserve in Hainan Province, China. Phylogenetic analysis based on 16S rRNA gene sequences suggested that strain S3Cf-2T fell within the family Micromonosporaceae and formed a distinct clade in the Micromonosporaceae phylogenetic tree. The similarity values between S3Cf-2T and the type species of 30 genera in the family Micromonosporaceae were 91...
December 30, 2016: International Journal of Systematic and Evolutionary Microbiology
Olga Maria Lage, Luciana Albuquerque, Alexandre Lobo-da Cunha, Milton S da Costa
One strain of a novel genus of the Planctomycetes, designated FC18T, was isolated from the epiphytic community of Fucus spiralis. This strain was non-pigmented in medium M13 but was slightly pink pigmented on medium M14, containg four-fold levels of glucose, peptone and yeast extract than M13. The organism was primarily spherical, with unicellular non-motile forms and rosettes. The optimal temperature for growth was about 25 ºC and the optimal pH was 7.5. Strain FC18T was chemoorganotrophic and aerobic. Several sugars, polyols, and amino acids were assimilated...
December 30, 2016: International Journal of Systematic and Evolutionary Microbiology
Zhimin Chen, Abdul Rashid Qureshi, Paolo Parini, Eva Hurt-Camejo, Jonaz Ripsweden, Torkel B Brismar, Peter Barany, Armand Jaminon, Leon J Schurgers, Olof Heimburger, Bengt Lindholm, Peter Stenvinkel
BACKGROUND: In end-stage renal disease (ESRD), coronary artery calcification (CAC) and inflammation contribute to cardiovascular disease (CVD). Statins do not improve survival in ESRD patients and their effect on vascular calcification is unclear. We explored associations between CAC, inflammatory biomarkers, statins and mortality in ESRD. MATERIAL AND METHODS: In 240 ESRD patients (63% males; median age 56 years) from cohorts including 86 recipients of living donor kidney transplant (LD-Rtx), 96 incident dialysis patients and 58 prevalent peritoneal dialysis patients, associations of CAC score (Agatston Units, AUs), interleukin-6 (IL-6) with high-sensitivity C-reactive protein (hsCRP), tumour necrosis factor (TNF), use of statins and all-cause mortality were analysed...
December 30, 2016: European Journal of Clinical Investigation
Peter Schumann, Hans-Jürgen Busse
Due to its separate position within the genus Arthrobacter in many published phylogenetic trees and its incomplete chemotaxonomic characterization the type strain of Arthrobacter sanguinis was subjected to analysis of its chemotaxonomic traits including quinone system, polar lipid profile, peptidoglycan structure and fatty acid profile. The fatty acid profile consisted of the major compounds (>10 %) iso-C15:0, anteiso-C15:0 and anteiso-C17:0. It showed a quinone system with the predominating menaquinone MK-9(H2)...
December 29, 2016: International Journal of Systematic and Evolutionary Microbiology
Baisuo Zhao, Weidong Lu, Shanshan Zhang, Kang Liu, Yanchun Yan, Jun Li
A Gram-stain-positive, cocci-shaped, non-spore-forming, and moderately halophilic bacterium, designed BZ-SZ-XJ29T, was isolated from a salt lake of China. On the basis of 16S rRNA gene sequence similarity, the most closely phylogenetic relatives were Bacillus saliphilus 6AGT (97.3 %) and other five Bacillus species (95.4-96.3 %). However, it shared only 89.5 % with Bacillus subtilis subsp. subtilis DSM 10T, indicating that this isolate might not be a member of Bacillus genus. The genomic DNA G+C content was 40...
December 29, 2016: International Journal of Systematic and Evolutionary Microbiology
Catherine Biniek, Eiri Heyno, Jerzy Kruk, Francesca Sparla, Paolo Trost, Anja Krieger-Liszkay
The quinone reductase NQR and the b-type cytochrome AIR12 of the plasma membrane are important for the control of reactive oxygen species in the apoplast. AIR12 and NQR are two proteins attached to the plant plasma membrane which may be important for generating and controlling levels of reactive oxygen species in the apoplast. AIR12 (Auxin Induced in Root culture) is a single gene of Arabidopsis that codes for a mono-heme cytochrome b. The NADPH quinone oxidoreductase NQR is a two-electron-transferring flavoenzyme that contributes to the generation of O 2(•-) in isolated plasma membranes...
December 28, 2016: Planta
Łukasz Jedynak, Maria Jedynak, Magdalena Kossykowska, Joanna Zagrodzka
An HPLC method with UV detection and separation with the use of a C30 reversed phase analytical column for the determination of chemical purity and assay of menaquinone-7 (MK7) in one chromatographic run was developed. The method is superior to the methods published in the USP Monograph in terms of selectivity, sensitivity and accuracy, as well as time, solvent and sample consumption. The developed methodology was applied to MK7 samples of active pharmaceutical ingredient (API) purity, MK7 samples of lower quality and crude MK7 samples before purification...
December 10, 2016: Journal of Pharmaceutical and Biomedical Analysis
Sooyeon Park, Min-Ji Ha, Sun Young Yoon, Yong-Taek Jung, Jung-Hoon Yoon
A Gram-stain-negative, non-flagellated, non-gliding, aerobic and rod-shaped bacterium, designated OITF-31T, was isolated from a tidal flat in Oido, an island of South Korea, and subjected to polyphasic taxonomic study. Strain OITF-31T grew optimally at 30 °C, at pH 7.0-8.0 and in the presence of 1.0-2.0 % (w/v) NaCl. The phylogenetic trees based on 16S rRNA gene sequences revealed that strain OITF-31T belonged to the genus Nonlabens, clustering with the type strains of N. dokdonensis and N. xylanidelens showing each 98...
December 22, 2016: International Journal of Systematic and Evolutionary Microbiology
Fuhong Xie, Yang Yang, Huan Ma, Shujing Quan, Dandan Yue, Yufei Sun, Fei Feng, Jing Zheng, Dehai Liu
A Gram-staining-positive, non-spore-forming and non-motile strain designated WYH11-7T was isolated from a phosphate mine in Yunnan Province, China. The taxonomic position of strain WYH11-7T was investigated by polyphasic approaches. Phylogenetic analyses based on 16S rRNA gene sequences indicated that strain WYH11-7T is a member of the genus Nocardioides. Strain WYH11-7T was closely related to Nocardioides jensenii DSM 20641T, Nocardioides dubius DSM 19084T, and Marmoricola terrae DSM 27141T, and had a pairwise 16S rRNA gene sequence similarities of 97...
December 22, 2016: International Journal of Systematic and Evolutionary Microbiology
Pavel Švec, Stanislava Králová, Hans-Jürgen Busse, Tanita Kleinhagauer, Roman Pantůček, Ivana Mašlaňová, Margo Cnockaert, Peter Vandamme, Eva Staňková, Tereza Gelbíčová, Pavla Holochová, Miloš Barták, Kamila Kýrová, Ivo Sedláček
A taxonomic study performed on 17 Gram-stain-negative rod-shaped bacterial strains originating from Antarctic environment is described. Initial phylogenetic analysis using 16S rRNA gene sequencing differentiated the strains into four groups belonging into the genus Pedobacter but they were separated from all hitherto described Pedobacter spp. Group I (n=8) was closest to Pedobacter aquatilis (97.8 % 16S rRNA gene sequence similarity). Group II (n=2) and group III (n=4) were closely related (98.8 % 16S rRNA gene sequence similarity) and showed Pedobacter jejuensis as their common nearest neighbour...
December 20, 2016: International Journal of Systematic and Evolutionary Microbiology
Alexandra Díez-Méndez, Raúl Rivas, Pedro F Mateos, Eustoquio Martínez-Molina, Primitivo Julio Santín, Juan Antonio Sánchez-Rodríguez, Encarna Velázquez
A bacterial strain designated RA9T was isolated from a root of Cistus ladanifer in Spain. Phylogenetic analyses based on 16S rRNA gene sequence placed the isolate into the genus Bacillus with its closest relatives being B. fortis R-6514T and B. fordii R-7190T with 98.2% similarity in both cases. DNA-DNA hybridization studies showed averages of 29 and 30%, respectively, between the strain RA9T and the type strains of B. fortis and B. fordii. The isolate was Gram-stain positive, motile and sporulating rod. Catalase and oxidase were positive...
December 15, 2016: International Journal of Systematic and Evolutionary Microbiology
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